Lighting – How to uninstall this old school light switch from the wall

When I used to do a lot of these for a building/renovation company, the approach our foreman recommended was to assume the drywall will need replacing anyway and just rip it out. That would let you remove that entire panel in 45 minutes, and then you can just pop a new piece of drywall in, which is another 15 minutes.

As you can see from your 45 minutes, the drywall is going to be ruined, so just bite the bullet - get in behind it and pull it all off. The use of a crow bar and hammer may help here.

If you are wanting to keep the tiles on the adjacent wall, make sure you have cut a gap in at the corner so you don't rip it out as well.

Also, make sure you have something over the drain, to avoid it becoming clogged (I know - sounds obvious, but people do forget)

Updated to incorporate comments

• Cement board and a vapour barrier are the only suitable backing for your tiles here. Drywall shouldn't have been in there to begin with.
• Watch out when hammering around plumbing, to avoid water leaks adding to your worries!

It looks like the Hue system doesn't have any candelabra sized bulbs. I don't see a Hue switch that would let you control the fixture as is. All the Hue system bulbs look large.

There are adapters that will let you use standard bulbs in an e14 socket:

I'm just not sure the bulb will fit in the fixture with the adapter - looks like it may be too small even without the adapter. It might turn out to be easier to change the fixture.

(BTW, if you are in the US, you may want to check that it's really E14 and not E17 intermediate size socket.)